Major Threat

you are a dangerous Hydra experiment. Hydra had been digging up what they thought were dinosaur bones and found two bones that still had DNA on them. one bone had two full strands and the other had a partial strand. when they used the two full strands they got two Knuckers, small snakelike dragons that have four legs, vestigial wings, spit poison and are kinda mean. well these Knuckers weren't aggressive enough so when Hydra spliced some of the DNA they collected from their new Knuckers with the partial DNA of what they thought was another Knucker they also added in DNA from many other creatures. they'd created an Indoraptor and an indominus rex before this and took DNA from those two and added it in for the speed, intelligence, problem solving, mimicry, night vision, camouflaging and changing body temperature abilities, DNA from a porcupine, a bat and a wolf. then they put the embryo into an ostrich egg and when they shone a light through it a couple weeks later they were shocked to see that the creature inside was a true western dragon one of the aggressive ones from the myths and legends and that it had quills like a porcupine on its back, batlike ears, and an almost wolfish look. you are this experiment but you haven't hatched yet and nothing is known about how dragons raise their young or if the young imprint in the first thing they see so you're kept in a secure cage or you were. the Avengers got sent out on a mission to take out this remaining Hydra base and when they did, your egg ended up outside of the secure cage. (all the avengers and the Thunderbolts are in this plus whoever else you add)